Cup.



L. W. LUELLEN.

CUP.

APPLICATION FILED FEB. 20, I911- Patented Nov. 12, 1918.

My 6 xzw a W UNITED sTA'rns PATENT OFFICE.

LAWBENCE W. LUELLEN, OF NEW YORK, N. Y., ASSIGNOR TO INDIVIDUAL DRINKINGCUP COMPANY OF NEW YORK, N. Y., A CORPORATION OF MAINE.

CUP.

Specification of Letters Patent.

Patented oil. 12, 1918.

Application filed February 20, 1911. Serial No. 609,756.

at New York, borough of Manhattan, in the county and State of New York,have invented a new and useful Cup, of which the following isaspecification.

As a hygienic measure, and as a matter of convenience, drinking vesselsare now frequently manufactured of such inexpensive, flexible materialas paper so treated as to be waterproof. In that type of these vesselswhich is of open or permanently cup-like form, as distinguished fromthose normally folded and which must be separated by the user, it isnecessary that they shall be so stable as to effectually resist collapsein the hands, and that their parts shall be of such strength that theymay not be readily torn or displaced by spoons or like utensils or byengagement with the delivery mechanism of dispensing or vendingapparatus. Still, it is desirable that to prevent repeated use they maybe destroyed by manual pressure. B my invention these results areattained by disposing the cup material, and particularly that of theside walls and flange, in such a manner that a minimum weight offers amaximum resistance to normal stresses. Furthermore, I have produced adrinking vessel of this class which is free from objectionableappearance and feeling characteristic of the usual methods ofmanufacture. hat constitutes my invention may be best appreciated fromthe following description and claims, the latter being understood asnot. limited to the embodiment illustrated and described in detail.

Figure 1 0f the accompanying drawings shows a blank from which myimproved cup may be formed; Fig. 2 is a perspective view of the cup inprocess of formation; Fig. 3 is a side elevation of said cup; Fig. 4: isa central vertical section therethrough; and Fig. 5 shows a top planview.

Inall figures of the drawings like characters of reference are employedto designate similar parts.

One way of carr ing out my invention is as follows: A blan A is cut fromthe desired material in the segmental form appearing in Fig. l of thedrawings. For this purpose I prefer some such fibrous mater al asrag-paper, in which the fibers are d1sposed throughout in. the samegeneral direction, the material ofl'ering the greatest res 1stance torupture at right angles to this line. The blank is so cut from the stockthat the fibers lie parallel to the central axis of the segment; thatis,

to a radius midway between the ends of the blank, a portion of thesefibers being indicated by the lighti broken lines (1,

Upon the completion of the blank, there is applied to it a coating of afluid substance which is both an adhesive and a waterproofing agent.Heated paratfin is especially adapted for this purpose, having thefurther advantage of remaining for some time in a plastic condition uponcooling before it finally sets. For reasons which will appear, thiscoating although preferably covering the entire area of the blank isdivided between opposite sides; half shown at b bein upon one face ofthe blank to the left of the median line as, as viewed in Fig. 1, and.the other half, 0, being upon the opposite face to the right of saidline. Such a quantity of the paraflin is employed in the coating, as topenetrate and fill the spaces between the fibers without passing throughto the other face, and to leave upon the side of application a thin yettangible film.

The blank-strip with the paraffin stil fluid is then subjected to thefirst step in the actualformation of the cup, it being rolled uponitself into the frustum of a cone, conveniently over a tapered core,with the coated surface 7) outward, as appears in Fig. 2, a circularbottom-piece 11 of pasteboard or the like being held within the cup atright angles to the axis and at some little distance from the lower orsmall end. end (i of the blank has reached the center line a: one layerof the side wall 10 of the cup will have taken shape. The rolling of thestrip continues, the coated surfaces 6 and 0 now contacting with oneanother until a tapered tube with a complete double wall results, withpreferably a slight overlap at 12 to insure the completion of the plurallayers. Between the layers of paper is a layer 13 of parafiin furnishedby the coalescing of the two films. With this layer 13 still in aplastic condition, the bottom 11 is forced down to the position which itis to finally occupy, and on account of the taper of the tubular wallproduces an annular groove or depr ssion 14 in which it seats itself. Atan ap ropriate time, the wall When the layers are pressed together andthe upper edge turned over at right angles to the axis to provide aflange 15, which is especially adapted to be engaged by deliverymechanism. All this is accomplished while the paraffin is still plastic.WVhen it solidifies there results a multiple Wall and flange combiningthe strength and rigidity of the layers of fibrous material andparaffin. The latter is entirely concealed, leaving both the interiorand the exterior of the cup practically unchanged; and by the manner ofapplication, in plural light coatings, the operations arerenderedcleanly, with freedom from waste and without danger from anexcess' soaking through the paper.

It must be noted that in the completed cup the fibers a of each layer ofpaper, through the rolling in tapered form, assume angular positionswith respect to those of the other layer, as will be best understood byreference to Fig. 3, those of the first layer being inclined-upwardlyand toward the left, and those of the outer layer toward the right.Because of this, there is no direction in which the flange and wall maybe readily torn, since at least one layer of the fibers will bepresented transversely to the rupturing stress. A greater resistance todistortion is also offered, this being of especial importance as regardsthe flange and the depression in which the bottom rests.

It is obvious that many modifications and changes may be made in theconstruction shown in the drawings without departing from the spirit andscope of my invention, and I do not mean to limit myself to theparticular form or forms shown and described.

Having thus described my invention, I claim:

1. A cup having a side wall consisting of a plurality of layers offlexible fibrous material, the fibers extending generally from top tobottom of the wall but lying at an angle with one another in adjacentlayers.

2. A vessel having a side wall circular in section and consisting of acontinuous strip of paper rolled upon itself in a plurality of layers,the fibers ofthe paper being disposed transversely of the strip.

3. A paper drinking cup, comprising side walls, a bottom and astiffening rim having a free edge projecting outward from the upper edgethereof to constitute a lip-engaging flange and being formed of aplurality of thicknesses of paper, reinforced by parafiin.

4. A paper drinking cup, having side walls and a bottom piece and havingan outwardly-presented lip-engaging portion reinforced by parafiininterposed between a plurality of layers of paper.

5. A drinking cup having side walls and a bottom formed of paper, fiberor the like,

Leeagrae and having at its upper open edge a plurality of layers ofpaper between which paraffin is interposed to constitute a smooth lip onthe cup.

(3. A drinking cup having its side walls and bottom formed of paper,fiber or the like, and having a rim at the upper edge thereof formed byturning out the upper edge of the side wall to form a free lip flangecomposed of at least two thicknesses of paper and having paraffinbetween said thicknesses.

7. A drinking cup having side walls and a bottom formed of paper andhaving a stiffening rim projecting outward from and being a free lipflange integra with the upper edge of said side walls and comprising aplurality of thicknesses of paper having paraffin therebetween,

8. A drinking cup having side Walls and an outwardly projecting free lipflange at the upper edge thereof formed of a single blank of paperdisposed upon itself and secured in place by paraffin or the like.

9. A drinking cup having side walls and an outwardly projecting free lipfla ge at the upper edge thereof, the said side Walls and flange beingformed from a single blank of paper, portions of which overlap and areheld in place by paraffin.

10. A drinking cup having side walls and an outwardly turned free lipflange made of a single piece of paper, said flange including a.plurality of thicknesses of paper held together by paraffin.

11. A drinking cup having side walls and a free lip flange at the upperedge thereof, said side walls and flange being formed from a singleblank of paper, portions of which overlap and are held in place byparaflin, the edge of said blank forming the fiange projecting outwardand constituting the greatest diameter of the cup.

12. A drinking cup having side walls, the upper edge of which is turnedoutward to form a free lip fiange or rim, formed of a single blank ofpaper rolled upon itself and secured both in the body and rim portionsby parafiin or the like, the edge of the blank forming the rimconstituting the greatest diameter of the cup.

13. As a new article of manufacture, a drinking cup, having integralside wall portlons of thin paper formed double by in timately overlayingthe paper upon itself, said wall portions being coated and impregnatedwith paraffin and cemented in position by the paraffin, said paraffinbeing the only secur ng means added to the paper and constituting astiffening layer between the thin wall portions.

14. As a new article of manufacture, a drinking cup, having integralside Wall portions of thin paper formed double by intimately overlayingthe paper upon itself,

the verlying portions being pressed together and coated with a sanitarywater-proofing permeating coating which alone cements the overlyingportions in position and reinforces the same.

15. As a new article of manufacture, a destructible receptacle, formedwith integral paper side wall portions of thin paper formed double byintimately-overlaying the paper upon itself and tapering from the topinwardly toward the bottom of' the receptacle, the overlying portionsbeing pressed together and giving the cup a substantially smoothsurface, and a coating of fusible, cementitious material of slightadhesive properties on the side wall portions making the sameWater-proof and holding alone the overlying portions in position andreinforcing the same.

16. A drinkingcup, having a side wall portion of thin paper formeddouble by intimately overlaying the integral paper upon itself to becapable of maintaining a predetermined-outline when the overlyingportions are secured togethensaid wall portion merging into an outwardlyextending free lip portion, and a strengthener and binder of paraiiinapplied to the cup alone cementing the overlylng portions of the doublewall together, and continuing therethrough and through the lip portionthereof, and around the juncture therebetween, to stiffen the same.

17. As a new article of manufacture, a drinking cup, formed with adownwardly tapered side wall of paper including intimately superimposedintegral layers of thin paper impregnated with and held together by afusible cement constituting a stiffening layer between the thin wallportions.

18. A drinking cup, formed with a side wall of thin paper and havingfree lip-engaging edge portion formed of a plurality of intimateintegral layers of the paper reinforced with parafiin between anduniting the layers. 4

Signed at Boston in the county of Suffolk and State of Massachusetts,this l3thday of February, 1911.

LAWRENCE W. LUELLEN.

Witnesses:

' HARLEY W. CrnrrENDEN, AUSTIN M. PINKHAM.

